Datasheet

© 1988 Burr-Brown Corporation PDS-851D Printed in U.S.A. October, 1993
FEATURES
● COMPLETELY FLOATING:
No Power Supply or Ground Connections
● HIGH ACCURACY: 100
µA ±0.5%
● LOW TEMPERATURE COEFFICIENT:
±25ppm/°C
● WIDE VOLTAGE COMPLIANCE:
2.5V to 40V
● ALSO INCLUDES CURRENT MIRROR
APPLICATIONS
● SENSOR EXCITATION
● BIASING CIRCUITRY
● OFFSETTING CURRENT LOOPS
● LOW VOLTAGE REFERENCES
● CHARGE-PUMP CIRCUITRY
● HYBRID MICROCIRCUITS
REF200
DUAL CURRENT SOURCE/CURRENT SINK
DESCRIPTION
The REF200 combines three circuit building-blocks
on a single monolithic chip—two 100µA current
sources and a current mirror. The sections are
dielectrically isolated, making them completely
independent. Also, since the current sources are two-
terminal devices, they can be used equally well as
current sinks. The performance of each section is
individually measured and laser-trimmed to achieve
high accuracy at low cost.
The sections can be pin-strapped for currents of 50µA,
100µA, 200µA, 300µA or 400µA. External circuitry
can be used to obtain virtually any current. These and
many other circuit techniques are shown in the
Applications section of this Data Sheet.
The REF200 is available in plastic 8-pin mini-DIP
and SOIC packages.
I
High
I
High
Substrate
Mirror
In
I
Low
I
Low
Mirror
Out
Mirror
Common
1
2
1
2
8765
1234
100µA 100µA
®
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: [phone] • Twx: 910-952-1111
Internet: http://www.burr-brown.com/ • FAXLine: [phone] (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]
REF200
REF200
SBVS020